From: "Patil, Rachna" <rachna@ti.com>
To: <linux-doc@vger.kernel.org>,
<devicetree-discuss@lists.ozlabs.org>,
<linux-kernel@vger.kernel.org>, <linux-input@vger.kernel.org>,
<linux-iio@vger.kernel.org>, <linux-omap@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>
Cc: Samuel Ortiz <sameo@linux.intel.com>,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Dmitry Torokhov <dtor@mail.ru>,
Rob Herring <rob.herring@calxeda.com>,
Jonathan Cameron <jic23@cam.ac.uk>,
Tony Lindgren <tony@atomide.com>,
Benit Cousson <b-cousson@ti.com>,
Grant Likely <grant.likely@secretlab.ca>,
Rob Landley <rob@landley.net>,
Russell King <linux@arm.linux.org.uk>,
"Patil, Rachna" <rachna@ti.com>
Subject: [PATCH v3 3/8] input: touchscreen: ti_tsc: remove unwanted fifo flush
Date: Fri, 18 Jan 2013 16:18:06 +0530 [thread overview]
Message-ID: <0110c0cb0cbd3c31dfd3f098f207cd5b765d247e.1358502134.git.rachna@ti.com> (raw)
In-Reply-To: <cover.1358502134.git.rachna@ti.com>
From: "Patil, Rachna" <rachna@ti.com>
When touchscreen and ADC are used together, this
unwanted fifo flush leads to loss of ADC data.
Signed-off-by: Patil, Rachna <rachna@ti.com>
---
drivers/input/touchscreen/ti_am335x_tsc.c | 10 ----------
1 file changed, 10 deletions(-)
diff --git a/drivers/input/touchscreen/ti_am335x_tsc.c b/drivers/input/touchscreen/ti_am335x_tsc.c
index 0c460f9..064d2b2 100644
--- a/drivers/input/touchscreen/ti_am335x_tsc.c
+++ b/drivers/input/touchscreen/ti_am335x_tsc.c
@@ -308,8 +308,6 @@ static irqreturn_t titsc_irq(int irq, void *dev)
unsigned int x = 0, y = 0;
unsigned int z1, z2, z;
unsigned int fsm;
- unsigned int fifo1count, fifo0count;
- int i;
status = titsc_readl(ts_dev, REG_IRQSTATUS);
if (status & IRQENB_FIFO0THRES) {
@@ -318,14 +316,6 @@ static irqreturn_t titsc_irq(int irq, void *dev)
z1 = titsc_readl(ts_dev, REG_FIFO0) & 0xfff;
z2 = titsc_readl(ts_dev, REG_FIFO1) & 0xfff;
- fifo1count = titsc_readl(ts_dev, REG_FIFO1CNT);
- for (i = 0; i < fifo1count; i++)
- titsc_readl(ts_dev, REG_FIFO1);
-
- fifo0count = titsc_readl(ts_dev, REG_FIFO0CNT);
- for (i = 0; i < fifo0count; i++)
- titsc_readl(ts_dev, REG_FIFO0);
-
if (ts_dev->pen_down && z1 != 0 && z2 != 0) {
/*
* Calculate pressure using formula
--
1.7.9.5
next prev parent reply other threads:[~2013-01-18 10:47 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-01-18 10:44 [PATCH v3 0/8] MFD: ti_am335x_tscadc: DT support and TSC features addition Patil, Rachna
2013-01-18 10:47 ` [PATCH v3 1/8] input: ti_am335x_tsc: Step enable bits made configurable Patil, Rachna
2013-01-18 10:47 ` [PATCH v3 2/8] input: ti_am335x_tsc: Order of TSC wires, " Patil, Rachna
2013-01-18 10:48 ` Patil, Rachna [this message]
2013-01-27 13:55 ` [PATCH v3 3/8] input: touchscreen: ti_tsc: remove unwanted fifo flush Peter Korsgaard
2013-01-18 10:48 ` [PATCH v3 4/8] MFD: ti_am335x_tscadc: add device tree binding information Patil, Rachna
2013-01-19 22:28 ` Lars-Peter Clausen
2013-01-22 9:31 ` Patil, Rachna
2013-01-18 10:48 ` [PATCH v3 5/8] MFD: ti_am335x_tscadc: Add DT support Patil, Rachna
2013-01-18 10:48 ` [PATCH v3 6/8] input: ti_am335x_tsc: " Patil, Rachna
2013-01-18 10:48 ` [PATCH v3 7/8] IIO: ti_am335x_adc: " Patil, Rachna
2013-01-18 10:48 ` [PATCH v3 8/8] arm/dts: AM335x-evm: Add TSC/ADC MFD device support Patil, Rachna
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